I bought Android Multimedia system for my car:
Core Ver: 3.4.0 - fengxunyi@fly-server-24core #1
Build: msm8226-userdebug 4.4.2 KVT49L eng.fengxunyi.20150828.144551 test-keys
But is seems that the Android is blocked: no file explorer, no browser (but there is an app with WebView with Google), no Google Play Store and no Developer options for adb (I have tried to click on the Build Number and nothing happened).
How can I unblock it? I want to install some apps but I don't know how.